Agder is a county (fylke) and traditional region in the southern part of Norway and is coextensive with the Southern Norway region. The county was established on 1 January 2020, when the old Vest-Agder and Aust-Agder counties were merged. Since the early 1900s, the term Sørlandet ("south country, south land, southland") has been commonly used for this region, sometimes with the inclusion of neighbouring Rogaland. Before that time, the area was considered a part of Western Norway. The area was a medieval petty kingdom, and after Norway's unification became known as Egðafylki and later Agdesiden, a county within the kingdom of Norway. The name Agder was not used after 1662, when the area was split into smaller governmental units called Nedenæs, Råbyggelaget, Lister, and Mandal. The name was resurrected in 1919 when two counties of Norway that roughly corresponded to the old Agdesiden county were renamed Aust-Agder (East Agder) and Vest-Agder (West Agder). Even before the two counties joined in 2020, they cooperated in many ways; the University of Agder had sites in both Aust-Agder and Vest-Agder, as did many other institutions, such as the Diocese of Agder og Telemark, the Agder Court of Appeal, and the Agder Police District.
Agder’s shoreline punches through the Skagerrak with a series of sheltered coves that have long hosted modest fishing villages. While the sea breeze carries the scent of salty kelp, the interior rises quickly into rolling forested hills, offering a stark contrast within a short drive. This duality lets travellers alternate between kayak paddles on calm waters and hushed walks among birch‑laden tracks, a pattern rare in larger Norwegian regions where the coast and mountains tend to be separated by longer distances.
Beyond the administrative reshuffle, Agder sustains a calendar of local celebrations that act as informal guideposts for visitors. In late summer, the town of Grimstad hosts a maritime music series that blends folk strings with modern indie acts, reflecting the area’s ship‑building heritage. Come winter, the city of Kristiansand stages a lights parade that threads through its historic quarter, offering a subtle alternative to the larger Oslo festivities. Timing a trip to coincide with these events provides a glimpse into how communities reinterpret tradition without the tourist‑centric fanfare seen elsewhere.
The 2020 merger of two former counties means road signage, public transport timetables and even regional branding can feel ambiguous to first‑time visitors. A practical tip is to download the local transit app, which integrates bus and train routes across the former boundaries and highlights “county‑wide” tickets valid on both coastal ferries and inland rail lines. Car rentals are equally useful; the main E18 corridor hugs the coast, while secondary routes, like the scenic Fv420, reveal hidden valleys and historic farmsteads that are omitted from standard guidebooks.
County in Southern Norway Not to be confused with Southern Norway. For other uses see Agder (disambiguation). County in NorwayAgder County Agder fylkeCounty FlagCoat of armsAgder within NorwayCoordinates: 58°46′46.53″N 7°40′6.45″E / 58.7795917°N 7.6684583°E / 58.7795917; 7.6684583CountryNorwayCountyAgderDistrictSouthern NorwayEstablished1 Jan 2020 • Preceded byAust-Agder andVest-Agder countiesAdministrative centreKristiansandGovernment • BodyAgder County Municipality • Governor (2022)Gina Lund (Ap) • County mayor    (2019)Arne Thomassen (H)Area • Total16,433.67 km2 (6,345.08 sq mi) • Land14,980.95 km2 (5,784.18 sq mi) • Water1,452.72 km2 (560.90 sq mi)  8.8% • Rank#8 in NorwayPopulation (2021) • Total308,843 • Rank#8 in Norway • Density20.6/km2 (53/sq mi) • Change (10 years) +9.3%DemonymEgde or EgdOfficial language • Norwegian formNeutralTime zoneUTC+01:00 (CET) • Summer (DST)UTC+02:00 (CEST)ISO 3166 codeNO-42WebsiteOfficial websiteData from Statistics Norway Agder is a county (fylke) and traditional region in the southern part of Norway and is coextensive with the Southern Norway region. The county was established on 1 January 2020, when the old Vest-Agder and Aust-Agder counties were merged. Since the early 1900s, the term Sørlandet ("south country, south land, southland") has been commonly used for this region, sometimes with the inclusion of neighbouring Rogaland. Before that time, the area was considered a part of Western Norway. The area was a medieval petty kingdom, and after Norway's unification became known as Egðafylki and later Agdesiden, a county within the kingdom of Norway. The name Agder was not used after 1662, when the area was split into smaller governmental units called Nedenæs, Råbyggelaget, Lister, and Mandal. The name was resurrected in 1919 when two counties of Norway that roughly corresponded to the old Agdesiden county were renamed Aust-Agder (East Agder) and Vest-Agder (West Agder). Even before the two counties joined in 2020, they cooperated in many ways; the University of Agder had sites in both Aust-Agder and Vest-Agder, as did many other institutions, such as the Diocese of Agder og Telemark, the Agder Court of Appeal, and the Agder Police District.
[edit] The origin of the name Agder is uncertain. The Old Norse form of the name is Agðir or Egðafylki, and may derive from Old Norse ǫgð or Indo-European root *ak-, 'to be sharp', suggesting 'the land that juts out (into the sea)'. This same root may also appear in place names like Agdenes (in Orkland Municipality), Aga (in Bømlo Municipality) and Agdestein (in Stord Municipality). Another interpretation links it to Old Norse agi, meaning 'rough seas', which would make Agder 'the land by the turbulent sea'. The Old Norse term for the inhabitants of the area was Egðir. The Egðir are believed to be the same etymologically as the Augandzi people mentioned in the Getica of Jordanes, who wrote of Scandza (Scandinavia) in the 6th century. If Jordanes's Scandza is a palatalized form of *Scandia, then Augandzi is likely a palatalized form of *Augandii, residents of *Augandia.
[edit] On 1 January 1838, the formannskapsdistrikt law went into effect, creating local municipalities all over Norway. The municipalities have changed over time through mergers and divisions as well as numerous boundary adjustments. When Agder county was established on 1 January 2020, it had 25 municipalities. Municipalnumber Arms Name Establishment Former municipal number(pre-2020 mergers) Formercounty 4201 Risør Municipality 1 January 1838 (1838-01-01) 0901 Risør Aust-Agder 4202 Grimstad Municipality 1 January 1838 (1838-01-01) 0904 Grimstad 4203 Arendal Municipality 1 January 1838 (1838-01-01) 0906 Arendal 4204 Kristiansand Municipality 1 January 1838 (1838-01-01) 1001 Kristiansand1017 Songdalen1018 Søgne Vest-Agder 4205 Lindesnes Municipality 1 January 1964 (1964-01-01) 1002 Mandal1021 Marnardal1029 Lindesnes 4206 Farsund Municipality 1 January 1838 (1838-01-01) 1003 Farsund 4207 Flekkefjord Municipality 1 January 1838 (1838-01-01) 1004 Flekkefjord 4211 Gjerstad Municipality 1 January 1838 (1838-01-01) 0911 Gjerstad Aust-Agder 4212 Vegårshei Municipality 1 January 1838 (1838-01-01) 0912 Vegårshei 4213 Tvedestrand Municipality 1 January 1838 (1838-01-01) 0914 Tvedestrand 4214 Froland Municipality 1 January 1850 (1850-01-01) 0919 Froland 4215 Lillesand Municipality 1 January 1838 (1838-01-01) 0926 Lillesand 4216 Birkenes Municipality 1 January 1838 (1838-01-01) 0928 Birkenes 4217 Åmli Municipality 1 January 1838 (1838-01-01) 0929 Åmli 4218 Iveland Municipality 1 January 1886 (1886-01-01) 0935 Iveland 4219 Evje og Hornnes Municipality 1 January 1960 (1960-01-01) 0937 Evje og Hornnes 4220 Bygland Municipality 1 January 1838 (1838-01-01) 0938 Bygland 4221 Valle Municipality 1 January 1838 (1838-01-01) 0940 Valle 4222 Bykle Municipality 1 January 1902 (1902-01-01) 0941 Bykle 4223 Vennesla Municipality 1 January 1864 (1864-01-01) 1014 Vennesla Vest-Agder 4224 Åseral Municipality 1 January 1838 (1838-01-01) 1026 Åseral 4225 Lyngdal Municipality 1 January 1838 (1838-01-01) 1027 Audnedal1032 Lyngdal 4226 Hægebostad Municipality 1 January 1838 (1838-01-01) 1034 Hægebostad 4227 Kvinesdal Municipality 1 January 1838 (1838-01-01) 1037 Kvinesdal 4228 Sirdal Municipality 1 January 1849 (1849-01-01) 1046 Sirdal
[edit] Norway of the Viking Age was divided into petty kingdoms ruled by chiefs who contended for land, maritime supremacy, or political ascendance and sought alliances or control through marriage with other royal families, either voluntary or forced. These circumstances produced the generally turbulent and heroic lives recorded in the Heimskringla. For example, the Ynglinga saga tells us that Harald Redbeard, chief of Agðir, refused his daughter Åsa to Gudröd Halvdanson, on which event Gudröd invaded Agðir, killed Harald and his son Gyrd, and took Åsa whether she would or no. She bore a son, Halvdan (the Black), and later arranged to have Gudröd assassinated. Among the royal families, these events seem to have been rather ordinary. Her word was the last in the argument, as her grandson, Harald Fairhair, unified Norway. Kings of Agder Legendary Kings Harald Agderking Víkar Kissa King Bjæring Monarchs of Agder (790–987) Harald Granraude, 7??–815, father of Åsa Åsa, between 815 and 834–838, mother of Halfdan the Black Halfdan the Black, father of Harald Fairhair, from 838 Kjotve the Rich, late 9th century Harald Gudrødsson Grenske, 976–987 Prior to the Viking Age is a gap in the region's history for a few hundred years, but in Jordanes we also find regions of the same but earlier forms of names, presumably also petty kingdoms under now unknown chiefs. The previous most credible source, Ptolemy, gives the briefest of sketches, only citing all of Norway as the Chaedini ("country people"). Perhaps the difference between kingdoms was not sufficiently important to cite them individually. Prior to then the most credible and respected source, Tacitus in Germania Chapter 44 described the Suiones, who were divided into civitates (kingdoms?) along the coast of Scandinavia and were unusual in owning fleets of a special type of ship. These were pointed on both ends and were driven by banks of oars that could be rearranged or shipped for river passage. They did not depend on sail (so Tacitus says) but other than that they do not differ from Viking ships. These civitates went all the way around Scandinavia to the Arctic, or at least to regions of very long days, where they stopped. It seems clear that in the Roman Iron Age Norway was populated by people of the same identity as Sweden, who were called the Suiones by Latin sources. In settling the coast at some point in prehistory they had been divided into civitates by the terrain. These states took on mainly geographical names or names of individuals or mythological characters. Agder was one of them. After the unification of Norway by Harold Fairhair and army and allies in the 10th century, all the civitates became provinces (fylker) and after their conversion to Christianity, they became dioceses or parishes. The development of Old Norse into local dialects and the dissimilation of customs due to isolation added an ethnic flavor to the area, which is cherished today.